(19)
(11) EP 0 824 080 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.10.1999 Bulletin 1999/41

(43) Date of publication A2:
18.02.1998 Bulletin 1998/08

(21) Application number: 97112032.4

(22) Date of filing: 15.07.1997
(51) International Patent Classification (IPC)6: B60C 1/00, B60C 9/18, B60C 9/08, B60C 15/06
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV RO SI

(30) Priority: 15.07.1996 JP 184975/96
22.07.1996 JP 192518/96
23.07.1996 JP 193453/96

(71) Applicant: Bridgestone Corporation
Tokyo 104 (JP)

(72) Inventors:
  • Nakamura, Shun
    Chuo-ku, Tokyo 104 (JP)
  • Nishimaki, Yuichi
    Chuo-ku, Tokyo 104 (JP)
  • Yamanaka, Eiji
    Chuo-ku, Tokyo 104 (JP)

(74) Representative: Hansen, Bernd, Dr. Dipl.-Chem. et al
Hoffmann Eitle, Patent- und Rechtsanwälte, Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Pneumatic tire


(57) A pneumatic tire formed by using a rubber composition comprising a vulcanization accelerator represented by the following general formula:

wherein R1 represents a hydrogen atom, an alkyl group, or an aryl group, and R2 represents an alkyl group or an aryl group when R1 represents a hydrogen atom, and represents a hydrogen atom, an alkyl group, or an aryl group when R1 represents an alkyl group or an aryl group, in an amount of 0.2 to 8.0 parts by weight per 100 parts by weight of a rubber component.
A pneumatic tire which maintains low rolling resistance and is improved to prevent resistance to ply-end separation throughout the entire term of tire use, a pneumatic tire which shows excellent controllability and durability in the last stage of tire use, and a pneumatic tire which prevents heat aging of belt layers and a decrease in the adhesion of steel cord with a rubber composition and shows excellent durability are provided.





Search report